Spectrum Analyzer continuous issue

I'm trying to run the Spectrum Analyzer but connecting it to a simple Sinewwave but no output is delivered. Attached is the simulink file. Please advice.

Answer 1

[J Chen]

The spectrum analyzer requires discrete input and the frerquency span needs to be adjusted according to the sampling period. The simulation time also needs to be longer for the abalyzer to collect enough data. See the attached file.